1306055026440 has 48 divisors (see below), whose sum is σ = 4244678837100. Its totient is φ = 348281340288.

The previous prime is 1306055026439. The next prime is 1306055026447. The reversal of 1306055026440 is 446205506031.

1306055026440 is a `hidden beast` number, since 1 + 3 + 0 + 6 + 0 + 5 + 5 + 0 + 2 + 644 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1182225639204 + 123829387236 = 1087302^2 + 351894^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1306055026395 and 1306055026404.

It is not an unprimeable number, because it can be changed into a prime (1306055026447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1813964955 + ... + 1813965674.

Almost surely, 2^{1306055026440} is an apocalyptic number.

1306055026440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1306055026440 is an abundant number, since it is smaller than the sum of its proper divisors (2938623810660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1306055026440 is a wasteful number, since it uses less digits than its factorization.

1306055026440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3627930646 (or 3627930639 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 1306055026440 in words is "one trillion, three hundred six billion, fifty-five million, twenty-six thousand, four hundred forty".